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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef Skottie_DEFINED
#define Skottie_DEFINED
#include "SkRefCnt.h"
#include "SkSize.h"
#include "SkString.h"
#include "SkTypes.h"
#include <memory>
class SkCanvas;
struct SkRect;
class SkStream;
namespace sksg { class Scene; }
namespace skottie {
namespace json { class ValueRef; }
class SK_API ResourceProvider : public SkNoncopyable {
public:
virtual ~ResourceProvider() = default;
virtual std::unique_ptr<SkStream> openStream(const char resource[]) const = 0;
};
class SK_API Animation : public SkRefCnt {
public:
struct Stats {
float fTotalLoadTimeMS,
fJsonParseTimeMS,
fSceneParseTimeMS;
size_t fJsonSize,
fAnimatorCount;
};
static sk_sp<Animation> Make(SkStream*, const ResourceProvider&, Stats* = nullptr);
static sk_sp<Animation> MakeFromFile(const char path[], const ResourceProvider* = nullptr,
Stats* = nullptr);
~Animation() override;
/**
* Draws the current animation frame.
*
* @param canvas destination canvas
* @param dst optional destination rect
*/
void render(SkCanvas* canvas, const SkRect* dst = nullptr) const;
/**
* Updates the animation state for |t|.
*
* @param t normalized [0..1] frame selector, where 0 == inPoint and 1 == outPoint.
*/
void seek(SkScalar t);
/**
* Returns the animation duration in seconds.
*/
SkScalar duration() const {
return (fOutPoint - fInPoint) / fFrameRate;
}
const SkString& version() const { return fVersion; }
const SkSize& size() const { return fSize; }
SkScalar frameRate() const { return fFrameRate; }
SkScalar inPoint() const { return fInPoint; }
SkScalar outPoint() const { return fOutPoint; }
void setShowInval(bool show);
private:
Animation(const ResourceProvider&, SkString ver, const SkSize& size, SkScalar fps,
const json::ValueRef&, Stats*);
SkString fVersion;
SkSize fSize;
SkScalar fFrameRate,
fInPoint,
fOutPoint;
std::unique_ptr<sksg::Scene> fScene;
typedef SkRefCnt INHERITED;
};
} // namespace skottie
#endif // Skottie_DEFINED
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